<template>
    <div class='login_container'>
        <div class='login_box'>
            <div class="avatar_box">
                <img src="../assets/logo.png" alt="">
            </div>
            <el-form :model="ruleForm" :rules="formrules" ref="ruleForm" label-width="70px" class="demo-ruleForm">
            <el-form-item label="用户名" prop="username">
                <el-input v-model="ruleForm.username"></el-input>
            </el-form-item>
            <el-form-item label="密码" prop="password">
                <el-input v-model="ruleForm.password"></el-input>
            </el-form-item>
            <el-form-item class="btns">
              <el-button type="primary" @click='submitForm("ruleForm")'>登陆</el-button>
              <el-button type='info' @click='resetForm("ruleForm")'>重置</el-button>
            </el-form-item>
        </el-form>
        </div>
    </div>
</template>

<script>
export default {
  data () {
    return {
      ruleForm: {
        username: 'admin',
        password: '123456'
      },
      formrules: {
        username: [
          { required: true, message: '请求输入用户名', trigger: 'blur' },
          { min: 3, max: 5, message: '长度在 3 到 5 个字符', trigger: 'blur' }
        ],
        password: [
          { required: true, message: '请输入密码', trigger: 'blur' },
          { min: 5, max: 15, message: '长度在 5 到 15 个字符', trigger: 'blur' }
        ]
      }
    }
  },

  methods: {
    submitForm (val) {
      // 提交
      // 对val对象进行校验
      this.$refs[val].validate(async (valid) => {
        if (valid) {
          const data = await this.$http.post('login', this.ruleForm)
          if (data.meta.status === 200) {
            // 定义成功消息
            this.$Message.success('成功登录')
            // 跳转到首页
            window.sessionStorage.setItem('token', data.data.token)

            this.$router.push('/home')
          } else {
            return this.$Message.error('登录失败')
          }
        }
      }
      )
    },
    resetForm (val) {
      // 重置
      this.$refs[val].resetFields()
    }
  }
}
</script>

<style lang="less" scoped>
.login_container {
  background-color: #2b5b6b;
  height: 100%;
}
.login_box {
  width: 450px;
  height: 300px;
  background: #fff;
  border-radius: 3px;
  position: absolute;
  left: 50%;
  top: 50%;
  transform: translate(-50%, -50%);
  .avatar_box {
    height: 130px;
    width: 130px;
    border: 1px solid #eee;
    border-radius: 50%;
    padding: 10px;
    box-shadow: 0 0 10px #ddd;
    position: absolute;
    left: 50%;
    transform: translate(-50%, -50%);
    background-color: #fff;
    img {
      width: 100%;
      height: 100%;
      border-radius: 50%;
      background-color: #eee;
    }
  }
}
.login_form {
  position: absolute;
  bottom: 0;
  width: 100%;
  padding: 0 20px;
  box-sizing: border-box;
}
.btns {
  display: flex;
  justify-content: flex-end;
}
.demo-ruleForm {
  width: 90%;
  position: absolute;
  transform: translateY(85px);
}

</style>
